The raw material mixture to obtain portland cement clinker
The raw mixture is prepared smesheniem a ball mill and calcined in a rotary kiln at a maximum temperature of about 1450 o C the resulting clinker with the addition of gypsum to about 5 wt ground to a specific surface area of about 350 m 2 /kg The composition of the raw mix and the properties of the cement are shown as table 1 and 2.
cement manufacturing process raw mill design pdf handbook
A raw mill is the equipment used to grind raw materials into rawmix during the manufacture of cement Rawmix is then fed to a cement kiln which transforms it into clinker which is then ground to make cement in the cement mill The raw milling stage of the process effectively defines the chemistry and therefore physical properties of the finished